Just be patient. Find a good flat, safe area, your ships hangar should be fine, and practice jumping. Try different timings between hitting space and hitting forward (or sideways or whatever). It's quite small gap and once you get the hang of it, you'll be after some of those trickier datacrons.
If you get some but, not all, no big deal, there are some I can't get (yet) but, it's not a worry. They are nice little bonuses, not essentials.